American Vietnam war veterans have helped locate the mass grave of 81 North Vietnamese troops killed in battle more than 40 years ago.
The remains, in the Central Highlands province of Kon Tum, will be returned to the soldiers’ families.
They are believed to have died during an attack on a US base in the area in March 1968 and were buried by the Americans.
Decades later US veterans who served at the base gave Vietnamese authorities a map to the mass grave.
The remains of four soldiers have been identified and returned to their families, while the remaining 77 unidentified sets of remains were buried in a local military cemetery today.
About 58,000 US troops and three million Vietnamese died in what is known there as the American War.
The conflict ended in 1975 after US troops were withdrawn and North Vietnam’s Communist forces overran Saigon, the capital of US-backed South Vietnam.
Washington and Hanoi established diplomatic relations in the early 1990s and now cooperate in searching for soldiers missing in action on both sides.